/**
 * Copyright (c) 2025 情感机器（北京）科技有限公司
 * LLMOne is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

import { join } from 'node:path'

/**
 * Add absolute paths to the specified fields in the object, without modifying the original object.
 * @param obj Input object
 * @param basePath Base path to prepend to the fields
 * @param fields Fields to add absolute paths to
 * @returns New object with absolute paths added to the specified fields
 */
export function addAbsolutePaths<T extends object>(obj: T, basePath: string, fields: (keyof T)[]): T {
  return fields.reduce(
    (acc, field) => {
      if (typeof obj[field] === 'string') {
        acc[field] = join(basePath, obj[field]) as T[keyof T]
      }
      return acc
    },
    { ...obj },
  )
}
